Gas heater



March 17, 1925. 4 J. P. CONROY ET AL GAS HEATER Filed July '7, 1924 2Sheets-Sheet 2 (iWorne Patented Mar. 17, 1925.

'UNITED STATES j 1,529,811 PATENT-orales.

J'Am P. CONROY, OIF NEW YORK, N. Y., AND ARTHUR L. ZWISLR, OF KALAMAZOJ,

g MICHIGAN. Q"

GAS HEATER.

Application led July 7,

To all 'whom 'it may concern.'

Be it known that we, JAMES P. CoNRor and ARTHUR L. ZWISLER, citizens ofthe United States of America, residing at New York cit and Kalamazoo, inthe counties of New Yyork and Kalamazoo, States of` New York andMichigan, respectively, have invented certain new and usefulImprovements in Gas Heaters; and we do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to a heater in which gaseous fuel is used andburned for the production of heat. It is a primary object and purpose ofour invention to provide a construction of heater wherein an absolutelycomplete burning of the fuel is obtained there being no products ofincomplete combustion given oli' from the heater which may be danerousor which may have a had odor. A further object of the invention is toprovide a relatively simple and compact construction of heater which canbe manufactured at low cost and produced and sold commercially at aprofit at a comparatively low price. Further objects of the inventionthan those stated will a pear as understanding of the invention is adfrom the following description, taken in connection with theaccompanying drawings', in which Fig. 1 is a central vertical sectionthrough the heater, the plane of the section being parallel to the frontof the heater.

Fig. 2 is'a horizontal section throughthe heater, and

Fig. 3 is a front elevation thereof with certain parts broken away forbetter disclosure of the immediate radiant construction.

Like reference characters refer to like parts in the different views ofthe drawings.

In the construction of the heater, a base 1 of sheet metal is providedwhich may be supported a distance 'above the floor by .means of suitablelegs 2 connected thereto by screws in the usual manner.

A sheet metal plate 3 is positioned vertically above and rests on thebase, this plate being curved l in the arc of a circle and, at its ends,curled inwardly making substantially cylindrical posts 4. The late islocated at the back of the heater ans on its front side, a curvedreflector 5 of suitable metal is located, at

1924. Serial No. 724,581.l

its lends being held between the ends of the plate 3 when curled to makethe osts 4 as shown in Fig. 2. Plates 3 and 5 ll only a portion of theback of the heater and at the front an additional post 6 is locatedextending upwardly from the base 1 substantially midway between the twoposts 4. Guards comprising horizontal spaced apart wires 7 connected byvertical wires 8 are disposed between the posts 4 and 6 the projectingends of the wires 7 entering openings made in the posts 4 and 6 so as tohold the guards in position, the same being readily removed or replacedwhenever necessary.

At the upper ends of the plates 3 and 5 and posts 4 and 6 a top member 9of sheet metal is located. It may be provided with suitable openings 9awhich may be opened or closed by means of a shutter plate 10 movablymounted on the under side of the top 9. A m`etal member 1l is alsosecured on the under side of the top 9 and at its edges are equippedwith tongues turned back upon themselves to make hooks 12, as shown inFig. 1, for a purpose which will later appear. Rods 13 pass downwardlythrough the top o f the osts 4 and 6 and the bottom 1 for securing tiiebase, me back and the top together.

The base 1 has a central opening through lwhich a burner 14 of circularform projects the same having an annular passage therethrough forcarrying mixed air and fuel which cornes to the burner through a lateralconduit 15 cast integral with the burner in the end of which is theusual gas fuel nozzle 16 surrounded by inlet air passages 17 of the Iusual construction in a Bunsen vburner for mixing the air with gas. Inthe upper side of the burner 14 a large number of vertical passages 18are made for the escape of the mixed air and 4fuel u wardly. Integralcross ribs 19 located at right angles to each other extend across thecircular opening enclosed by the burner 14; and these ribs are formed ofupwardly extending portions 19 forming a positioning guide for the lowerend of a center core 20 which is seated thereover. This core is hollowand tapers slightly upwards, the upper end portion thereof having aplurality of holes 21 made through its walls. It is evident that airpassin upwardly into the core between cross ri s 19 may escape throughthe openings 21. The lower edge of the core 20 is seated inwardly burner14L whereby open passages 22 are made between the burner and the corefor the passage of air upwardly oir the outside of the core.

An outer member 23 also of truste-conical .f

form, and sometimes termed a radiant, is located around the inner core20 and has a large number of openings 24 therethrough as shown so thatthe outer member has a substantially-- lattice appearance.A The base 'ofthis member is large enough to surround the burner with open spaces 25between the louter side. of the burner and/the innerlsides of the, saidmember for the entrance of air therethrough and the radiant is held inposition by upwardly projecting lugs 26 cast integral with and extendingupwardly from the burner casting, as shown in Figs. 1 and 2.

At the upper end of the inner core 2O and t-he radiant 23, a covermember or head 27 is located being solid in cross section and havin anannular recess 28 in its lower side Sufliciently wide to receive theupper ends of the members 2O and 23, the upper end of the core 20receivin the downwardly projecting portion-29 of t e head 27which isleft when the recess 28 is cut. Bails 30 are pivotally connected to anddepend from the hooks 12 heretofore described, crossing each other andpassing around the head 27 so that whenever it is desired the head maybe lifted above the upper ends of members 20 and 23 and frictioiiallyheld by the bails, as whenit is desired to removethe radiant and innercore for replacement or repair.

The core 20, radiant23 and head 27 are of-iefractory material capable ofsustaining a' very high degree of temperature. When the mixed air andfuel passes from the burner throu h Ithe passages 18 and is lighted, theame is confined between the core and the radiant 23. Air is supplied tothe fuel in addition to that passin through the opening 17 by passingthrough the openings 22 and 25 and also openings 24 in the radiant. Inaddition imperfect combustion which may occur where air only is suppliedat thesev lower points adjacent the burner is obviated by the incompleteelements of combustion risin between the core and radiant and receivingadditional heated air through the opening 21 of the inner core wherebyan absolutely complete combustion of the fuel is obtained with anincrease of heat and a heating of the radiant throughout its entirelength to a very high degree of temperature such that it becomesincandescent. The heat is given oil from the radiant and that whichprojects to the rear is again forwardly projected by the reector 5 sothat all of the heat is radiated into the room where the heater ispositioned.

The construction while simple is especially ecient for the completecombustion of gaseousfuel in heaters. Various ways of getting air fromthe inner core outwardly to the fuel besides through the openings 21 maybe resorted to and it should be understood that the particular specifictype of openings shown at 21 andthe distance to which such openings mayextend downwardly is subject to a great deal of variation without in anyrespect departing from the invention. This construction has been fullytested and severely tried and has proved especially practical andefficient in all respects.

The invention is defined in the appended claims and is to be consideredcomprehensive 'of vall forms of structure coming within `their scope.

rectly 'over the central opening surrounded by the burner, said core,adjacent its upper vend portion having openings made through its sides,au outer radiant surrounding the core and having a plurality of openingsthrough its sides, means for supporting the from the core, there beingpassages between the inner side of the burner and outerA side of thecore and other passages between the outer sides of the burner and innersides of the radiant, and means closing the Iupper ends of the core andradiant.

2. In a device of the class described, a burner having a central openingtherethrough for the passage of air, a hollow central core carriedon'the burner with its open lower end located directl over the openingthrough the burner, sai core adjacent its upper end havingpassagesthrough its sides and at its lower end having its outersideslocatedl inside of the sidesof the opening through the burner, andan outer radiant member around and spaced from the core, said radianthaving a plurality of openings through its sides and its inner sides atthe bottom thereof'located outside of theouter sides of the burner.

3. In la device of the character described, a burner, an inner coreI andan outer radiant carried on and above the core, the fuel passedv fromthe burner vassing between the core and radiant, said provided with aplurality of openings throughits sides, and means for supplying airbetween the said core and radiant at the upper portions thereof, saidair passing throu h the core, substantially as described.

J4:. i a device of the character described,

radiant being radiant on the burner and holding it spaced a centralvertical hollow core, a radiant surrounding and spaced from the core,said radiant being formed with a plurality of openings through itssides, a cap closing the upper end of the core and radiant, said corebelow the cap having assages throu h its sides for-the passa e of) airfrom insi e the core to between tie core and radiant, and a fuel burnerlocated at the lower end of the core and radiant and having fuel outletpassa res at its upper side, the upper ends of w lich are locatedbetween said core and radiant.

5. In a device of the class described, a central vertical hollow coretapering upwardly, a radiant surrounding the core and also taperingupwardly and spaced from the core, means closing the upper end of theradiant, said core belng formed so as to pass air from inside thereof tobetween the core and radiant, and a fuel burner located at the lower endof the radiant and core havin fuel outlet passages delivering fuel to beurned between the core and radiant, said radiant having openingstherethrough, substantially as and for the purposes described.

6. In a device of the character described, an outer radiant havinopenings in its sides, a hollow centra lengthwise of the radiant, saidcore and radiant having open ends and being spaced from each other, a cpclosin one end of the said radiant and core, sai core having y openingsfor the passage of air from inside core positioned lower end on theburnerinside of the said .fuel (passage openings, an outer radiantprovide with o enings through its sides sur-l rounding an spaced fromthe core and bearing at its lower end against the burner outside of thefuel passage o enin s, said radiant also tapering upward y an beingcloser to the core at its upper than at itsv lower end, said core at itsupper portion having a plurality of openings through its sides, and acap removably located at and closing the upper ends of the core andradiant.

8. A construction containing the elements in combination defined inclaim 7, combined with a frame located around the said radiant, areflector carried by said frame vertically back of the radiant, a top tothe frame, and means connected to the to and engaging said cap adaptedto hold it 1n`positlon a permit it to bear against the upper endsthereof.

9. In a device of the character described,

tures.

JAMES P. OONROY. ARTHUR L. ZWISLER.

upwardly, said ove the said core and radiant or

